Titanium Nozzle Durability: How Does it Withstand Extreme Temperatures?

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SUMMARY

Titanium nozzles are capable of withstanding extreme temperatures due to their cooling effect from gas flow, despite titanium's melting point of 1668 degrees Celsius. The discussion highlights that while the flame temperature can reach 3200-3500 degrees Celsius, the gaseous flow through the nozzle effectively cools it, preventing melting. Comparisons are made with brass nozzles used in acetylene torches, which can cut through steel, indicating that material choice is critical in high-temperature applications. The potential risks of using titanium in high-temperature environments are also noted, particularly due to its flammability in air.

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donaldcat
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Why does the nozzle not melt even when the melting point of titanium at 1668 degree celsius, and the flame of the flame is up to 3200-3500 degree celsius.
 
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Assuming that what is burning coming out of the nozzle is gaseous, the flow of the gas through the nozzle will cool it. (The cooling effect would work with liquid too)

Acetylene torches for example, IIRC, have brass nozzles (with several small holes for the oxygen and acetylene to emerge) and can cut through steel, a much higher melting point material. Oxy-hydrogen torches can cut through reinforced concrete, and concrete is VERY refractory.
 
What type of nozzles do you think are made from titanium? Considering it catches fire at a lower temperature than it melts and burns fiercely in air (similar to magnesium, if you have seen that demonstrated in a chemistry lab) that would be a very dumb idea.
 

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